#!/usr/bin/env python3

class Student:
    a = "aaaa"
    _b = "bbb"
    __c = "cccc"

    def __init__(self, a, _b, __c):
        self.a = a
        self._b = _b
        self.__c = __c

    def setC(self, value):
        self.__c = value

    def __run(self):
        print("__run....")

    def show(self):
        print("a = ", self.a, ", b = ", self._b, ", c = ", self.__c)
        self.__run()

def main():
    s = Student(111, 222, 333)
    print(s.a, s._b)
    s.setC(8888)
    #  s._Student__c = 6788
    #  s.__run()
    #  print(s.__c)
    #  s.__c = 356
    print(s.__dict__)
    s.show()

if __name__ == "__main__":
    main()
